The gorgeous wife-to-be stole her little sister Kylie’s bikini and stretched it all the way out then posted the pic on Instagram. “Yep stole Kylie’s bikini…she’s not getting it back,” she wrote flashing her curves in the itty bitty swimwear.

Who wore it better?

After enjoying a quick swim she headed over to Collins Ave. for the grand opening of the Kardashian sister’s newest Dash store.